Contracts for future construction in San Diego County were down 10 percent in the first nine months of 2012, compared with the same period a year ago, according to McGraw-Hill Construction.

A total of just over $2.44 billion in contracts were filed locally in the January-September period, including residential and nonresidential projects. Residential contracts rose 9 percent from the year-ago period, to $853.5 million, while nonresidential contracts dropped 18 percent, to just over $1.58 billion.

The state of California saw overall contracts drop 11 percent in the first nine months of the year, to just over $32.7 billion, the data provider reported. Residential contracts were up 30 percent statewide, while nonresidential projects were down 11 percent.